After the rear is glued in place, the front of the top is glued to the header. Again, proper fitting is a must. The front header needs to be flipped up to install the fabric. It must be placed properly because because when the top is up (frame fully extended), the fabric becomes taunt. The fit will be proper if the bow flaps are centered with the front bow when the header is up. After the glue sets and you lower the header, you will see the fabric stretch, but the bow flaps will still be centered with the bows. If you see this, pat yourself on the back.